| Good bye Natsuo | |
| Type: | single |
| Artist: | Aya Matsuura |
| Album: | X3 |
| Released: | June 4, 2003 |
| Recorded: | 2003 |
| Genre: | Japanese pop |
| Length: | 12:13 |
| Label: | Zetima |
| Producer: | Tsunku, Yasuharu Konishi |
| Prev Title: | Nee? |
| Prev Year: | 2003 |
| Next Title: | The Last Night |
| Next Year: | 2003 |
is the tenth single by Aya Matsuura, a former Hello! Project solo artist. It was released on June 4, 2003, under the Zetima label. The single peaked at #3 on the Oricon weekly singles charts, charting for eleven weeks.[1]